Improvement in water-feeders for steam-boilers



D. IFFLAND. WATER-FEEDERS FDR STEAM BOILERS.

UNITED STATES PATENT OEEroEo DANIEL IFFLAND, OF HAMBURG, GERMANY,ASSIGNOR OF ONE-HALF HIS 4 RIGHT TO ERNST HADENFELD, OF SAME PLAGE.

IMPROVEMENTV IN WATER-FEEDERS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 190,044, dated April24, 1877; applicationled January 16, 1877. I

To all whom it may concern Beit known that I, DANIEL IEFLAND, of thecity of Hamburg, in the Empire of Germany, have invented certain new anduseful Improvements in Automatic or Self-Acting Feed-Valves' forSteam-Boilers, of which the following isla specification:

My invention consists of a double-seated valve of peculiar construction,to permit the steam to escape through a connecting-pipe and putin motiona feed apparatus, such as an injector or other suitable apparatusadapted to be operated by steam, to inject or pump a sufficient quantityof Water in the boiler to cause the float to rise and close the valveagain, and also in means to grind the valve to its seat. v

By means of this arrangement the level of the water in a boiler can varyonly within very narrow limits.

In the accompanying drawings, Figure l is an elevation, partly insection, showing the general arrangement of my improved self-actingvalve. Fig. 2 is a vertical transverse section of the valve and casingand its connections. Fig. 2 is a similar view, showing the valve-lifterin position. Figs. 3 and 4 are transverse or cross sections on line x wyy of Fig. 2, respectively; and Fig. 5 is an under-side view of thevalve.

A is the boiler; B, the float, adjustably connected to the valve-rod Gby means of the sleeve b and set-screw o, to adapt the float to beadjusted to the required water-level of a boiler.

The upper end of the rod G isscrewed to the shank dof a cylindrical ortubular valve, D. E is the valve-casing, also of cylindrical form, theupper portion e of which is contracted, or of smaller diameter than thelower portion el, and is provided on the under face of the ledge, formedat the point of contraction, with a projection or face, e2, of annularform, constituting one of the seats for the valve, a similar annularprojecting seat, e3, being formed in its head.

Gr is an outlet branch, through which the steam is conducted to anysuitable feeding apparatus, such as an injector or other apparatusadapted to be operated by steam. j

H is a spider, screwed to the lower part of the casing, and forms aguide for the valverod G.

I is a flange on the casing, for connecting the latter, in any suitableor preferred manner, with thezboiler, and K is a cut-oi'valve to cut offthe steam from the feeding apparatus in case of leakage at theconnection of the casing with the boiler.

D is the valve of cylindrical or tubular form, having an enlarged base,d1, and shank d, said enlargement forming a .slightly-projecting annularface or edge, d2, which is seated against a similar face, e2, on thecasing E, while the upper circumference of the valve D also forms aslightly-enlarged upwardlyprojecting annular face, d3, which has itsseat against a corresponding slightly downwardprojecting annular face,e3, on the head of the casing E.

The enlarged base d1 is provided with three ports, f, to admit steamwithin the valve, and thus distributev its pressure evenly, orcounterbalance it.

By means of the construction and arrangement just described a`double-seated counterbalanced valve is obtained, which is verysensitive to the slightest variations in the level of the water in theboiler; hence the relative position of the .oat actuating said valve.The valve and shank are also provided with three vertical projections orledges, F, forming guides to guide the valve and shank properly Withinthe casing.

Lis a screw plug or bolt screwed in the head.l of the casing, and bymeans of which access may be had to the valve when it becomes necessaryto true its faces and the seats, which may be effected by grinding, asfollows: l is a screw-threaded recess formed in the enlargement d1 atthe bottom of the valve, in which the stem or rod of a valvelifter, l',may be screwed, by means of which the grinding is then effected.

Having now described my invention, and the means by which it'may becarried into effect, what I claim, and desire to secure by patent, is

l. The combination, With the valvecasing E, having annular seats e2 e3,of the cylindrical valve, having annular faces dda, an enlarged base,d1, and shank d, said base being provided With ports f, and the guidesF. all constructed and operating substantially as described, for thepurpose specified.

2. The cylindrical double-seated valve D,

the threaded recess l, adapted to receive a valve-lifter, in combinationwith the casing E, having an opening in its head. substantially asdescribed, for the purpose set forth.

In Witness whereof I have hereunto signed my naine in the presence oftwo subscribing Witnesses.

DANIEL IFFLAND.

Witnesses HUGO SIMON, GUIDO SCHMIDT.

